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Berry, M.W.; Browne, M.: Understanding search engines : mathematical modeling and text retrieval (1999)
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Berry, M.W.; Browne, M.: Understanding search engines : mathematical modeling and text retrieval (2005)
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Lavrenko, V.: ¬A generative theory of relevance (2009)
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Langville, A.N.; Meyer, C.D.: Google's PageRank and beyond : the science of search engine rankings (2006)
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